FWIW, I went in to my delivery without seeing my MVPA, and brought a bank draft of the amount I told Tesla financing would be my down payment. Also, it was made out to Tesla Motors, and they questioned it, but accepted it. (It should be Tesla Motors Canada ULC).
All the other little fees and taxes were added onto my financing, not required payment up front. So my deposit was exactly what i brought. This might only work when financing through Tesla themselves though...